x²-(4-i)x+5-5i=0 要算式

x²-(4-i)x+5-5i=0 x²-(4-i)x+5-5i=0 要算式 几道数学代数因式分解题1.1/2x²-8ax+32a²2.x²(x²-y²)+z²(y²-x²)3.(x+2)(x+4)+14.已知a²+b²+4a-2b+5=0,求a、b的值.* * * * * * * * * ★ * ★ * * ★ * >>>------I love you!---->* * * ★ * * 已知I 3x+2y-4 I + 4(5x+7y-3)²=0,求x,y的值. 怎么算啊这个：X²+4X+Y²-2Y+5=0 则X²+Y²=?²²²²²²²²²²²²X²+4X+Y²-2Y+5X=0 则X²+Y²=? x²-(4-i)x+5-5i=0 xy²/(x²y-y) × x²/(x²+x)=(x²-3x)/(x²-5x) × 2x-10/(x²-6x+9)=化简求植x²-1/(x²-x-2)除以x/2x-4,其中x=1/2[x-x/(x+1)]除以[x/(2x-4)] ,其中x=√2+1 (5/x²-3x-4)+(4/x²-5x-6)-(8/x²-10x+24)=? 5(x²-x)=3(x²+x) -x²+4x-5 I 1 3 0 I I 7 I I 0 1 -1 I X= I 2 I求X.大哥大姐,用矩阵的初等变换写~I 2 1 5 I I 4 I 积分区域D有y=√4-x²和x轴围成的半圆求I=∫∫|x²+y²-1|dxdy 1.（3x²+10x²+13x-27)/(x²+2x-3)2.（2x²+x³-2）/（x²-1)3.已知A=(3x)²-21x³-2x²+11x-2 B=3x³-5x²-4x+1求a²/b² 已知x² -XY = 2,Y² -XY= 5,求x² - 4x Y+ Y² = 2x² + xY -3Y² = x² 已知x² -XY = 2,Y² -XY= 5,求x² - 4x Y+ Y² = 2x² + xY -3Y² = x² + xY- 2Y² =求x² - 4x Y+ Y² = 已知x²+4x+y²-2y+5=0,则x²+y²= 为什么(2-3i)x(1+i)=5-i 谁能帮我解这道二元二次方程,急5x²+10y² = 187.52x²+5y²= 4x²- y²+2.5 xy²/(x²y) - y×x²/(x²+x)=(x²-3x)/(x²-5x×2x) - 10/(x²-6x+9)=2a/(a²-4) - 1/(a-2)=2/(1-a ) - 1/(a-1)=x²-1/(x²-x-2)除以x/2x-4,其中x=1/2[x-x/(x+1)]除以[x/(2x-4)] ,其中x=√2+1